Mattress Size Guide

Compare standard U.S. mattress sizes by use case, room fit and sleeper needs.

Start with the room, then the sleeper

A larger mattress can improve personal space, but it also changes walkway clearance, frame size, bedding cost and delivery logistics.

Common choices

Twin and Twin XL are compact; Full adds width for one sleeper; Queen is a common two-person compromise; King adds width for couples; California King trades some width for extra length.

Measure before ordering

Confirm room dimensions, doorways, stair turns and the exact manufacturer's finished mattress dimensions before purchase.